rspec users - Nov 2011 - Wrong number of arguments (reduce, rspec/core/metadata)

Hello,

I''m a bit puzzled on this one.

I''m getting a wrong number of arguments on a reduce call (full stack
trace
here: https://gist.github.com/1348309).

Any idea where it could come from? (I tried with 2.7.1 and 2.8.0.rc1).

FWIW, it''s a Rails 2.3/RSpec 1 app that I''m migrating to Rails
3.0/RSpec 2.

Any hint is most welcome!

thanks,

-- Thibaut
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On Nov 8, 2011, at 10:45 AM, Thibaut Barr?re wrote:
> Hello,
> 
> I''m a bit puzzled on this one.
> 
> I''m getting a wrong number of arguments on a reduce call (full
stack trace here: https://gist.github.com/1348309).
> 
> Any idea where it could come from? (I tried with 2.7.1 and 2.8.0.rc1).
> 
> FWIW, it''s a Rails 2.3/RSpec 1 app that I''m migrating to
Rails 3.0/RSpec 2.
> 
> Any hint is most welcome!
> 
> thanks,
> 
> -- Thibaut
reduce has a number of different forms, one of which is collection.reduce { ...
} (with a block but no args).

My best guess is either your app or another lib/gem is redefining reduce.
Possible?

Hi David,

reduce has a number of different forms, one of which is collection.reduce {
> ... } (with a block but no args). 
>
My best guess is either your app or another lib/gem is redefining reduce.
> Possible?
>
well I don''t know the codebase enough yet, but I guess yes,
it''s definitely
possible.

Thanks for the hint! (and sorry for the late reply - as I was newly 
subscribed to this group, I didn''t get your reply until I came back
myself
on the group).

-- Thibaut

 
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In case it helps someone else: I couldn''t find if the method was
redefined
by another class, but applying this patch solves the issue:

https://github.com/rspec/rspec-core/commit/41c20dfc4e8bc99b6c7bba1e074883614d2aa656

(using inject instead of reduce).

I''m on ruby 1.8.7 (2010-08-16 patchlevel 302). The issue happens with
RSpec
2.7.0, but not with RSpec 2.5.0.

-- Thibaut
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